Move fpuctl.h stuff into lib9, like on Linux. Inline asm version is

probably mis-optimized by modern gcc, but I didn't bother investigating.

1 files changed, 34 insertions, 0 deletions

diff --git a/lib9/setfcr-NetBSD-386.S b/lib9/setfcr-NetBSD-386.S
new file mode 100644
index 00000000..d981f36a
--- /dev/null
+++ b/lib9/setfcr-NetBSD-386.S
@@ -0,0 +1,34 @@
+
+#define	FN(x)	.type x,@function; .global x; x
+#define	ENT	subl $16, %esp
+#define	RET	addl $16, %esp; ret
+
+	.file	"setfcr-Linux-386.S"
+FN(setfcr):
+	ENT
+	xorb	$0x3f, %al
+	movl	%eax, (%esp)
+	fwait
+	fldcw	(%esp)
+	RET
+
+FN(getfcr):
+	ENT
+	fwait
+	fstcw	(%esp)
+	movw	(%esp), %ax
+	andl	$0xffff, %eax
+	xorb	$0x3f, %al
+	RET
+
+FN(getfsr):
+	ENT
+	fwait
+	fstsw	(%esp)
+	movw	(%esp), %ax
+	andl	$0xffff, %eax
+	RET
+
+FN(setfsr):
+	fclex
+	ret